| 二次曲线中点弦存在性定理的证明 |
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| 引用本文： | 施伟民,陈争鸣. 二次曲线中点弦存在性定理的证明[J]. 四川理工学院学报(自然科学版), 2007, 20(6): 32-35 |
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| 作者姓名： | 施伟民 陈争鸣 |
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| 作者单位： | 泉州师范学院数学系,福建,泉州,362000;泉州师范学院数学系,福建,泉州,362000 |
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| 摘 要： | 二次曲线中点弦存在性问题的探讨,对二次曲线的研究有着及其重要的意义。文章利用射影几何方法及配极原理给出二次曲线中点弦存在性定理的证明。
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| 关 键 词： | 二次曲线 中点弦 射影几何 配极原理 |
| 文章编号： | 1673-1549（2007）06-0032-04 |
| 收稿时间： | 2007-03-14 |
| 修稿时间： | 2007-03-14 |
Proof of the Existence Therorem of Midpoint Chord of Quadratic Curve |
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| SHI Wei-min,CHEN Zheng-ming. Proof of the Existence Therorem of Midpoint Chord of Quadratic Curve[J]. Journal of Sichuan University of Science & Engineering(Natural Science Editton), 2007, 20(6): 32-35 |
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| Authors: | SHI Wei-min CHEN Zheng-ming |
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| Abstract: | Problems about the existence of midpoint chord of quadratic curve is worthy of discussing in the study of the theories about quadratic curve. In this paper, the existence theorem of midpoint chord of quadratic curve, as well as its proof, is given via methods of projective geometry and polarity principle. |
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| Keywords: | quadratic curve midpoint chord projective geometry polarity principle |
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